Snappers, jacks, unicorn surgeonfish, batfish... And shoals, certainly.
But there are lot of divers, too, altough much less than in the past.
---------- Post added February 2nd, 2013 at 10:20 AM ----------
I had to mention the trip last year was really great. We were lucky with the weather and the currents (we didn't feel any at the Ras Muhammad, for example, we had very easy dives), we had some dolphin encounters, some spectacular dives with shoals, awesome wreck dives (the divers had the chance to dive 8 different wrecks, small and big, modern and older, etc), there were turtles, thousands of glassfish, lot of different morays, and so on. As we in the last few years organize photographer-friendly trips, it was a little different from the ordinary trips. We prefer to stay at specific spots and if it's possible, we try to be the only one dive boat. Maybe our dives are shallower but longer as well. I think the key of the nice liveaboard experience to know your limits and expectations and choose the right trip. I'm sure there are plenty of the divers who'd be bored to visit the same shallow dive spot for 3 or 4 times but for us it was a wonderful chance to go back for a nice subject.
This year we will head to the south, to explore some another reefs. I don't expect shoals there, but larger and more turtles, less wrecks but if we visit there can be sharks- we'll see. I still love Red Sea diving...